B. Kraut, G. Ferraudi
Sep 15, 1988
Citations
0
Influential Citations
12
Citations
Journal
Inorganica Chimica Acta
Abstract
Abstract The photochemical behavior of Tin(IV) dichlorophthalocyaninate, Sn(pc)Cl 2 , and tin(IV) super phthalocyanine, Sn(pc) 2 , has been investigated by flash photolysis. Irradiations, λ exc ∼ 640 nm, of Sn(pc)Cl 2 generate the lowest lying triplet state, ( 3 ππ * )Sn(pc)Cl 2 , with a half lifetime, τ ∼ 40 μ s . Quenching of this excited state with paradinitrobenzene produces a Sn(IV) phthalocyanine radical which isomerizes to a Sn(III) complex in a μ s time domain. The photochemistry of Sn(pc) 2 can be described in terms of an unreactive 3 ππ * and a reactive CT excited state. Dissociation reactions form Sn II (pc) and Sn IV (pc)(solvent) 2 . The regeneration of the superphthalocyanine takes place through a Sn(III) intermediate.